21750309

素因数分解:

$3^3\times 7^1\times {\mathrm{157}}^1\times {\mathrm{733}}^1$

素因数の和:906

約数の個数: 32

約数和(自身を含む): 37111040

約数和(自身を除く): 15360731

約数列:

[1, 3, 7, 9, 21, 27, 63, 157, 189, 471, 733, 1099, 1413, 2199, 3297, 4239, 5131, 6597, 9891, 15393, 19791, 29673, 46179, 115081, 138537, 345243, 805567, 1035729, 2416701, 3107187, 7250103, 21750309]

約数ペア:

[(1, 21750309), (3, 7250103), (7, 3107187), (9, 2416701), (21, 1035729), (27, 805567), (63, 345243), (157, 138537), (189, 115081), (471, 46179), (733, 29673), (1099, 19791), (1413, 15393), (2199, 9891), (3297, 6597), (4239, 5131)]